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Finding the Fourth Proportional to 116,648.12, 160,977.42 and 65,662.68

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Solution

The fourth proportional to 116,648.12, 160,977.42 and 65,662.68 is: 90,616.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,648.12 : 160,977.42 = 65,662.68 : x
  2. Step 2: Convert to fraction form
    116,648.12/160,977.42 = 65,662.68/x
  3. Step 3: Cross multiply
    116,648.12x = 160,977.42 × 65,662.68
  4. Step 4: Simplify right side
    116,648.12x = 10,570,207,861.42
  5. Step 5: Solve for x
    x = 10,570,207,861.42/116,648.12
  6. Step 6: Final answer
    x = 90,616.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.